Provided is an oil or fat composition, which has an MCPD-FS content X (ppm) and a hydroxyl value Y (mg-KOH/g) satisfying a relationship of the following expression (1), the content X being measured by a Deutsche Gesellschaft für Fettwissenschaft (DGF) standard method C-III 18(09), and has a content (%) of trans isomers of linoleic acids in constituent fatty acids of an oil or fat, of 2 or more.Y≧1.25X+4 where Y≦88 (1).
